Just to reiterate that I don't personally think a Sailbarge is likely. A part of it, maybe, for the deck cannon to attach to... Could it be intended for the skiff? Anything is possible, but this wave's a ways off, so I think it maybe is intended for something else in the future. A part of the barge? Maybe. A toy barge? You never really know... I don't think it's likely though.
And yes, I want my Tantive IV just like that. I bought a chunk of land near my house specifically for it. I expect it will come with the only release of a new Fleet Trooper, making army building impossible. And he'll have a massive mullet sculpted on him which will blow.